The 4690-S12 from Modular Devices is a DC to DC Converter with Input Voltage 16 to 50 V, Output Voltage 1 11.9 to 12.1 V, Output Current 1 0.0208 to 0.208 A, Output Power 2500 mW, Isolation Voltage 100 to 500 Vdc. Tags: Through Hole, Module. More details for 4690-S12 can be seen below.